wgpu/tests/parse.rs

//TODO: consider converting this to snapshots?

#[cfg(feature = "glsl-in")]
fn check_glsl(name: &str) {
    let path = std::path::PathBuf::from("tests/cases").join(name);
    let input = std::fs::read_to_string(path).unwrap();
    let stage = if name.ends_with(".vert") {
        naga::ShaderStage::Vertex
    } else if name.ends_with(".frag") {
        naga::ShaderStage::Fragment
    } else if name.ends_with(".comp") {
        naga::ShaderStage::Compute
    } else {
        panic!("Unknown extension in {:?}", name)
    };

    match naga::front::glsl::parse_str(&input, "main", stage, Default::default()) {
        Ok(m) => match naga::proc::Validator::new().validate(&m) {
            Ok(()) => (),
            Err(e) => panic!("Unable to validate {}: {:?}", name, e),
        },
        Err(e) => panic!("Unable to parse {}: {:?}", name, e),
    };
}

#[cfg(feature = "glsl-in")]
#[test]
fn parse_glsl() {
    //check_glsl("glsl_constant_expression.vert"); //TODO
    //check_glsl("glsl_if_preprocessor.vert");
    check_glsl("glsl_preprocessor_abuse.vert");
    check_glsl("glsl_vertex_test_shader.vert");
}